551443400144 has 80 divisors (see below), whose sum is σ = 1319209731840. Its totient is φ = 217451796480.

The previous prime is 551443400143. The next prime is 551443400171. The reversal of 551443400144 is 441004344155.

It is a super-3 number, since 3×551443400144³ (a number of 36 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551443400143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 156089 + ... + 1061720.

It is an arithmetic number, because the mean of its divisors is an integer number (16490121648).

Almost surely, 2^551443400144 is an apocalyptic number.

It is an amenable number.

551443400144 is an abundant number, since it is smaller than the sum of its proper divisors (767766331696).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

551443400144 is a wasteful number, since it uses less digits than its factorization.

551443400144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1218148 (or 1218142 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 35.

Adding to 551443400144 its reverse (441004344155), we get a palindrome (992447744299).

The spelling of 551443400144 in words is "five hundred fifty-one billion, four hundred forty-three million, four hundred thousand, one hundred forty-four".